Artykuły w czasopismach: „Copper industry and mining”

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Matuszewski, Maciej. "Synergies in mergers and acquisitions in the copper mining industry". Ekonomia i Prawo 20, nr 2 (30.06.2021): 277–86. http://dx.doi.org/10.12775/eip.2021.016.

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Motivation: The results of the research shall broaden the knowledge required for interpretation of synergy effects in the mineral mining sectors. The results obtained shall be used for further research when developing procedures for analysis and evaluation of the effects of mergers and acquisitions in the copper ore mining sector and may also be used by the management of an acquiring party involved in mergers and acquisitions in the copper mining sector. Aim: The aim of the research, the results of which has been presented in this article, was to identify areas of processes concerning operations and costs as possible sources of synergies in the merger and acquisition processes in the copper ore mining sector. A critical review of literature about the subject as well as desk research have been used to make the study. Results: The obtained results confirm the need for synergy effects, in the areas of both operations and costs, to be considered in the processes of mergers and acquisitions in the copper ore mining sector. Taking into account the strategy map and the cost structure in the copper mining sector, we may conclude that the costs of mining and milling are the key parameters of the cost structure (in relation to overheads) and they should be considered as the specific subject of due diligence, because apparently, this is the area where the greatest synergy value may be achieved.

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Ranjbar, M., M. Schaffie, Mohammad Pazouki, R. Ghazi, A. Akbary, S. Zanddevakili, S. A. Seied Baghery i Z. Manafi. "Application Potential of Biohydrometallurgy in the Iranian Mining Industry". Advanced Materials Research 20-21 (lipiec 2007): 38–41. http://dx.doi.org/10.4028/www.scientific.net/amr.20-21.38.

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Several studies and different successful commercial applications had demonstrated that bioleaching can be an innovative approach that is capable to provide mining industry opportunities for essential growth in the medium term[2-18]. To identify the commercial application potential of bioleaching in Iranian copper industry, a research program was initiated. The objective of the main part of this program was to evaluate bacterial leaching processes for copper recovery from (i) high grade ores and flotation concentrates and (ii) low grade ores and flotation tailings. The latest results of these studies indicates the general operability of the bioleaching in both cases. At optimum conditions, the copper extraction from low grade materials was more than 80% and that from high grade ores and flotation concentrates about 95%, which should be high enough to justify the process economically.

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Arévalo Rodríguez, Santiago, i Joaquín Eduardo Piscoya Álvarez. "Future scenarios of the copper industry. A prospective study of the sector in Peru". Ingeniería Industrial, nr 45 (29.11.2023): 193–211. http://dx.doi.org/10.26439/ing.ind2023.n45.6637.

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Mining has led to multiple social conflicts between communities and companies. However, at the same time, it has been the activity with the greatest contribution to Peru’s gross domestic product for more than a decade, especially copper mining. The importance of copper lies in the fact that it is one of the basic raw materials for the manufacture of products and the expansion of global industries. This research seeks to identify and analyze the possible behavioral scenarios that will support copper mining in the next five years. Foresight (projection of future scenarios), along with the judgment of experts in the field, was used for conducting the research. This methodology employs a non-experimental design and aims at both exploratory and descriptive results. The main findings include an increase in the electricity cost for mining and the continuation of an unfavorable political leadership for its development. It is clear that this issue is taking place in a sensitive context due to the constant social conflicts that occur in favor of the growth of industry. This study will undoubtedly propose solutions to this disparity and will research whether, in any scenario, copper mining and the total population of a copper-rich country can really coexist.

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Wincewicz-Bosy, Marta, Małgorzata Dymyt i Katarzyna Wasowska. "The Supply Chain of the Mining Industry: The Case of Copper Mining". EUROPEAN RESEARCH STUDIES JOURNAL XXIV, Issue 1 (1.02.2021): 204–25. http://dx.doi.org/10.35808/ersj/1958.

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Valenzuela, Luis. "The Chilean Copper Smelting Industry in the Mid-Nineteenth Century: Phases of Expansion and Stagnation, 1834–58". Journal of Latin American Studies 24, nr 3 (październik 1992): 507–50. http://dx.doi.org/10.1017/s0022216x00024263.

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This article looks at the beginnings and early development of the modern copper smelting industry in Chile. It analyses the factors which led to its occurrence, contrasting it with other countries where no smelting industry developed. It argues that the development of the Chilean smelting industry stimulated copper mining and reinforced the expansion of coal mining. Furthermore, it permitted the retention in the country of a larger part of the rent generated by copper mining than would have been the case had all the copper ore been exported, and was therefore an important factor in the development of the Chilean economy as a whole.Until 1879 tne Chilean copper industry was the most dynamic sector of the economy of the Republic. During the period 1844—79 it generated exports of 341 million pesos (around £64 million), or 42.3 % of the total value of the exports of the country, and contributed 29 million pesos, or almost 10% of the ordinary fiscal income, through the export duty levied.1 Most of this copper left Chile in the shape of ingots of over 99% fine (that is pure) copper, bar copper of c. 96 % fine or regulus, a semi-processed form of copper of around 50% fine; only 12.1 % left in the shape of copper ores of different types.2 The smelting and, to an even greater extent, the refining of the copper ore in Chile permitted the miners to develop a wider variety of potential markets. It also facilitated the Luis Valenzuela is a Lecturer at the Centre for Development Studies, University College of Swansea.

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Turabdzhanov, Sadritdin, Zulkaynar Nazirov, Dildora Turaeva i Latofatkhon Rakhimova. "Perspective Wastewater Treatment from Cu2+ Ions in the Mining Industry". E3S Web of Conferences 105 (2019): 02025. http://dx.doi.org/10.1051/e3sconf/201910502025.

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The synthesis of new cation-exchanger based on local raw materials for the extraction of copper from copper-containing solution investigated. A review of the literature regarding the problem of ion exchange method and the use of mine wastewater treatment process is presented. Sorption selectivity of Cu2+ ions by cation exchanger in the H-and Na-forms from dilute solutions was studied in the target concentration range 90 mg/dm3 and 5,49 g/ dm3. The full dynamic exchange capacity calculated. The cation exchanger analyzed with consideration for IR spectroscopic, chemical analysis, and scanning electron microscopic data. Quantum-chemical calculations performed that synthesized cation-exchanger stable complexes with Cu2+ ions. Obtained cation exchanger due to excellent behavior recommended removing copper ions from wastewater in the mine industry.

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Yepsen, Orlando, Jorge Yáñez i Héctor D. Mansilla. "Photocorrosion of copper sulfides: Toward a solar mining industry". Solar Energy 171 (wrzesień 2018): 106–11. http://dx.doi.org/10.1016/j.solener.2018.06.049.

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Wang, Hong Tao, Yu Liu, Xian Zheng Gong, Zhi Hong Wang, Feng Gao i Zuo Ren Nie. "Life Cycle Assessment of Metallic Copper Produced by the Pyrometallurgical Technology of China". Materials Science Forum 814 (marzec 2015): 559–63. http://dx.doi.org/10.4028/www.scientific.net/msf.814.559.

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With the rapid development of industry in China, China has become the largest producer of refined copper as well as the largest consumer of copper in the world. In order to provide the support for decreasing the environmental impact of the copper pyrometallurgy of China, the life cycle assessment methodology was carried out in this study to identify and analyze the typical processes’ environmental load of refined copper production from ‘cradle-to-gate’ perspective. The results showed that the most serious environmental impact of copper pyrometallurgy was abiotic depletion potential and human toxicity. The abiotic depletion potential mainly comes from the copper ore mining, for this reason, increasing the use of renewable copper is an effective means to alleviate environmental load of our country copper pyrometallurgy industry. Meanwhile, reducing the direct and indirect discharge of poisonous and harmful elements (e.g. heavy metals) from the copper ore mining stage and the copper smelting process could decrease the human health damage efficiently.

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Astudillo, Á., M. Garcia, V. Quezada i L. Valásquez. "The use of seawater in copper hydrometallurgical processing in Chile: A review". Journal of the Southern African Institute of Mining and Metallurgy 123, nr 7 (5.10.2023): 357–64. http://dx.doi.org/10.17159/2411-9717/2445/2023.

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Seawater has become a viable alternative for different uses in copper hydrometallurgy. In this paper we review the main physical and chemical characteristics of seawater and how these influence copper production. Reliable data on the use of continental water are reported, and the current use and consumption of seawater in the Chilean mining industry is analysed, indicating the main areas of use and the main problems encountered. Additionally, the influence of the elements in seawaterthat have the most influence on the extractive metallurgy of copper are considered. The Chilean copper mining industry currently consumes approximately 4.1 m3/s of seawater, which corresponds to 25% of the total water used. The use of seawater for the leaching of copper sulphide minerals, such as chalcopyrite, is beneficial because it provides 20 g/L of chloride, thereby improving copper dissolution kinetics.

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Rahmahwati, Atika, Aryo Prawoto Wibowo i Fadhila Achmadi Rosyid. "Analysis of the Copper Industry Chain in Indonesia Using a System Dynamics Approach to Optimize Its Added Value". Journal of Engineering and Technological Sciences 54, nr 5 (5.09.2022): 220504. http://dx.doi.org/10.5614/j.eng.technol.sci.2022.54.5.4.

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Indonesia is a leading producer of a wide range of minerals, including copper. Nonetheless, the copper-based industry in Indonesia is still not well developed, especially the limited number of products from the intermediate copper industry which will become raw materials for its downstream industry. The underdeveloped intermediate copper industry has forced Indonesia to import several types of copper-based semi-finished products to meet the needs of the downstream industry. On the other hand, the mining industry still exports copper concentrate and some copper cathodes produced by smelting. As a result, the added value obtained by Indonesia from copper is not optimal. Therefore, it is necessary to conduct research on the copper industry chain and to estimate the increase in added value that could be generated. In this study, a system dynamics (SD) model was developed. During the simulation period of 2020 to 2030, the total added value along the copper industry chain that can be obtained is USD 70,422,840,000 if the planned smelter and refinery is completed in 2023 to process all domestic concentrates and to increase intermediate industry capacity.

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Flores, Victor, Brian Keith i Claudio Leiva. "Using Artificial Intelligence Techniques to Improve the Prediction of Copper Recovery by Leaching". Journal of Sensors 2020 (7.02.2020): 1–12. http://dx.doi.org/10.1155/2020/2454875.

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Copper mining activity is going through big changes due to increasing technological development in the area and the influence of industry 4.0. These changes, produced by technological context and more controls (e.g., environmental controls), are also becoming visible in Chilean mining. New regulations from the Chilean government and changes in the copper mining industry (such as a trend to underground mining) are fostering the search for better results in typical processes such as leaching. This paper describes an experience using artificial intelligence techniques, particularly random forest, to develop predictive models for copper recovery by leaching, using data from an enterprise present in northern Chile for more than 20 years. Two models, one of them with actual operational data and another one with data generated in a controlled environment (piling) are presented. Well-classified values of 98.90% for operational data and 98.72% for pile/piling data were obtained. The methodology devised for the study can be transferred to piling columns or piles with other characteristics, though the operation must focus on copper leaching. It can even be transferred to other leaching processes using another type of mineral, with proper adjustments.

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Flores, Victor, i Claudio Leiva. "A Comparative Study on Supervised Machine Learning Algorithms for Copper Recovery Quality Prediction in a Leaching Process". Sensors 21, nr 6 (17.03.2021): 2119. http://dx.doi.org/10.3390/s21062119.

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The copper mining industry is increasingly using artificial intelligence methods to improve copper production processes. Recent studies reveal the use of algorithms, such as Artificial Neural Network, Support Vector Machine, and Random Forest, among others, to develop models for predicting product quality. Other studies compare the predictive models developed with these machine learning algorithms in the mining industry as a whole. However, not many copper mining studies published compare the results of machine learning techniques for copper recovery prediction. This study makes a detailed comparison between three models for predicting copper recovery by leaching, using four datasets resulting from mining operations in Northern Chile. The algorithms used for developing the models were Random Forest, Support Vector Machine, and Artificial Neural Network. To validate these models, four indicators or values of merit were used: accuracy (acc), precision (p), recall (r), and Matthew’s correlation coefficient (mcc). This paper describes the dataset preparation and the refinement of the threshold values used for the predictive variable most influential on the class (the copper recovery). Results show both a precision over 98.50% and also the model with the best behavior between the predicted and the real values. Finally, the obtained models have the following mean values: acc = 0.943, p = 88.47, r = 0.995, and mcc = 0.232. These values are highly competitive when compared with those obtained in similar studies using other approaches in the context.

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Norkhudjayev, F. R., A. A. Mukhamedov, K. V. Guzashvili, Z. B. Mirzarakhimova i Z. F. Chulliyev. "Properties of powdered metal-ceramic materials obtained from by-products of the mining and metallurgical industry of Uzbekistan". E3S Web of Conferences 401 (2023): 03060. http://dx.doi.org/10.1051/e3sconf/202340103060.

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One of the actual problems of production is the use of various waste products, in particular metallurgical. The method of powder metallurgy allows the use of waste from metallurgical industries. This is used in this work to obtain an antifriction porous material based on iron and copper. Iron and copper powders obtained at the Almalyk Mining and Metallurgical Combine by restoring iron and copper scale of metallurgical plants are used. Pyrite, a waste product of the Almalyk Mining and Metallurgical Combine, is used as an additive material. Tests have shown the possibility of manufacturing metal-ceramic iron and copper-containing antifriction alloys with pyrite additive based on local raw materials.

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Derpich, Ivan, Nicole Munoz i Andrea Espinoza. "Improving the productivity of the copper mining process in the Chilean copper industry". Croatian Operational Research Review 10, nr 2 (13.12.2019): 227–40. http://dx.doi.org/10.17535/crorr.2019.0020.

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Munene, Hyden. "Mining the Past: A Report of Four Archival Repositories in Zambia". History in Africa 47 (18.07.2019): 359–73. http://dx.doi.org/10.1017/hia.2019.24.

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Abstract:Researchers and scholars have written on the history of mining in Zambia using a variety of sources and archives. But much of the history written from local archives has relied heavily on the National Archives of Zambia. Yet, important archival holdings for researchers of the history of Zambia’s mining industry also exist in the Zambia Consolidated Copper Mines Archive, the United National Independence Party Archive, and in the Mineworkers’ Union of Zambia Headquarters. These repositories house rich collections of data invaluable for understanding Zambia’s mining industry. Covering the period from the 1890s to the present, these archives make possible new questions and interpretations of Zambia’s mining industry.

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Toro, Norman, Edelmira Gálvez, Pedro Robles, Jonathan Castillo, Grecia Villca i Eleazar Salinas-Rodríguez. "Use of Alternative Water Resources in Copper Leaching Processes in Chilean Mining Industry—A Review". Metals 12, nr 3 (4.03.2022): 445. http://dx.doi.org/10.3390/met12030445.

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Due to the significant growth of the world population, the accelerated growth of economic industries in various countries, and improved living conditions, freshwater consumption has increased dramatically and is currently under critical pressure. Its good use and rationing are essential. Even though mining is an industry that consumes much less water than other industries, such as agriculture, surrounding communities are constantly questioned. This occurs mainly because mining deposits are generally found in arid areas where freshwater is scarce, forcing government authorities to regulate water use in mining processes more severely. Faced with this scenario, the mining industry has innovated the use of seawater and wastewater from processes for its production processes. In addition, various projects are under development to construct desalination plants and water impulsion systems of the sea; therefore, it is expected that seawater and/or wastewater in mining will continue to grow in the coming years. Among the main challenges faced in the use of these water resources in mining is: (i) the close relationship that exists between the use of seawater and energy consumption, transferring the problem of water scarcity to a problem of energy cost overruns; (ii) generation of greater integration between the use of water and sustainable energy; and (iii) brine management is economically expensive and technically challenging and, therefore, most desalination plants discharge untreated brine directly into the sea, causing an environmental impact. On the other hand, regarding the use of these water resources in leaching processes, there are very positive results for the dissolution of copper from sulfide minerals, where the wastewater from desalination plants presents better results than seawater due to its higher concentration of chloride ions, allowing it to work at higher redox potential values in order to increase copper dissolution. This manuscript is a bibliographic review in which finally, it is concluded that it is feasible to incorporate wastewater from water desalination plants in heap leaching processes for copper sulfide ores, as long as the cost of transfer from water desalination plants to mining sites can be supported.

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Culver, William C., i Cornel Reinhart. "The Douglas report: chilean mining and its political representation in 1871". Si Somos Americanos 4, nr 3 (30.06.2003): 79–102. http://dx.doi.org/10.61303/07190948.v4i3.795.

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James Douglas (1873-1918), born i Canada, became e leading figure in the world copper industry and then mining in general. his firstgreat success came in Arizona after be located the Atlanta property for the Phelps-Dodge Company. He went on to become president of the company. he founded a family prominent in Arizonamining and politics . Earlyin this career, 1871, Douglas traveled extensibely Chile visiting the major cooper mining districs. Home in Quebec, he wrote of series of papers and articles on Chilean mining. The paper draws attention to his observations as an impartial diagnosis of the Chilean mining industry before it went into decline in the 1880s.

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Leiva, Claudio, Víctor Flores, Felipe Salgado, Diego Poblete i Claudio Acuña. "Applying Softcomputing for Copper Recovery in Leaching Process". Scientific Programming 2017 (2017): 1–6. http://dx.doi.org/10.1155/2017/6459582.

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The mining industry of the last few decades recognizes that it is more profitable to simulate model using historical data and available mining process knowledge rather than draw conclusions regarding future mine exploitation based on certain conditions. The variability of the composition of copper leach piles makes it unlikely to obtain high precision simulations using traditional statistical methods; however the same data collection favors the use of softcomputing techniques to enhance the accuracy of copper recovery via leaching by way of prediction models. In this paper, a predictive modeling contrasting is made; a linear model, a quadratic model, a cubic model, and a model based on the use of an artificial neural network (ANN) are presented. The model entries were obtained from operation data and data of piloting in columns. The ANN was constructed with 9 input variables, 6 hidden layers, and a neuron in the output layer corresponding to copper leaching prediction. The validation of the models was performed with real information and these results were used by a mining company in northern Chile to improve copper mining processes.

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Vokhidov, B. R. "NEW HORIZONS PROCESSING OF TECHNOGENIC WASTE OF THE COPPER INDUSTRY". American Journal of Applied sciences 04, nr 05 (1.05.2022): 42–51. http://dx.doi.org/10.37547/tajas/volume04issue05-03.

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At the present time, in the mining and metallurgical industry, there are trends in the processing of man-made waste that have accumulated over the course of many years. Since the world's reserves of ore deposits with a high initial content of non-ferrous metals and easily processed ores are currently practically depleted. This is due to a decrease in the volume of processing of conditioned ores and the involvement in the development of industrial waste, refractory ores and off-balance from low-grade dumps. High prices for metals on the world market create a favorable environment for the development of technologies for the extraction of precious metals involving the processing of mineral resources of technogenic origin. The work studies the mineralogical composition of industrial waste from the copper industry in the conditions of JSC "Almalyk MMC", determined the effectiveness of methods for the selective extraction of platinoids and paid attention to the methods of dissolution, reduction of platinum metals and methods of their purification from various impurities. Based on the study of this topic and the analysis of the results of the research, the authors proposed an optimal technology and complex methods for extracting platinum, palladium and rhodium from industrial waste using selective methods suitable for each metal separately using hydrometallurgy and pyrometallurgy. Hydrometallurgical methods have been developed for the purification of palladium, platinum and rhodium with treatment, respectively, with formic, citric and nitric acids. As a result of the developed technologies, the possibility of complex extraction of platinum group metals from industrial waste has been achieved. In this case, the end-to-end extraction of all platinoids is over 80%.

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Oyama, Keishi. "Applicability Estimation of Bioleaching into Copper Mining Industry: Comparison between Mining-Developed and Developing Countries". Evergreen 7, nr 2 (czerwiec 2020): 195–201. http://dx.doi.org/10.5109/4055216.

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Medina, Diego, i Corby G. Anderson. "A Review of the Cyanidation Treatment of Copper-Gold Ores and Concentrates". Metals 10, nr 7 (5.07.2020): 897. http://dx.doi.org/10.3390/met10070897.

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Globally, copper, silver, and gold orebody grades have been dropping, and the mineralogy surrounding them has become more diversified and complex. The cyanidation process for gold production has remained dominant for over 130 years because of its selectivity and feasibility in the mining industry. For this reason, the industry has been adjusting its methods for the extraction of gold, by utilizing more efficient processes and technologies. Often, gold may be found in conjunction with copper and silver in ores and concentrates. Hence, the application of cyanide to these types of ores can present some difficulty, as the diversity of minerals found within these ores can cause the application of cyanidation to become more complicated. This paper outlines the practices, processes, and reagents proposed for the effective treatment of these ores. The primary purpose of this review paper is to present the hydrometallurgical processes that currently exist in the mining industry for the treatment of silver, copper, and gold ores, as well as concentrate treatments. In addition, this paper aims to present the most important challenges that the industry currently faces, so that future processes that are both more efficient and feasible may be established.

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Yang, Shan, Ke Li, Shuliang Wu, Zitong Xu i Taoying Liu. "Quality Evaluation of Wasteless Mining in Dongguashan Based on Intuitionistic Fuzzy Set and VIKOR". Applied Sciences 12, nr 16 (18.08.2022): 8249. http://dx.doi.org/10.3390/app12168249.

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Wasteless mining has become the mainstream mode of China’s mining industry, which is an environmentally friendly and sustainable mining method. To effectively evaluate the construction of a green mine, the wasteless mining evaluation method was proposed, based on the intuitionistic fuzzy set theory and the Vise Kriterijumska Optimizacija I Kompromisno Resenje (VIKOR) decision-making method in this study. Firstly, the intuitionistic fuzzy sets for six indicators (such as waste rock utilization, tailing sand utilization and the current mining situation) of the Dongguashan Copper Mine were established, based on the intuitionistic fuzzy set theory and the national standard system. Secondly, referring to the green mine evaluation system, the index weights were calculated with the Analytic Hierarchy Process (AHP) method. Finally, the above intuitionistic fuzzy set matrix was ranked by the VIKOR method. The calculation results show that the group utility value of this mine is 0.1943 ∈ (0,0.2), which is at level I; the individual regret value is 0.0916 ∈ (0.075,0.15), which is at level II; the compromise value is 0.2193 ∈ (0.2,0.4), which is at level II. Through comprehensive assessment, the final evaluation of the wasteless mining in the Dongguashan Copper Mine is Grade II. The Dongguashan Copper Mine is one of the first mining enterprises subject to the transformation into wasteless mining in China. The results of the final evaluation are consistent with the current status of wasteless mining in the Dongguashan Copper Mine.

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Santoro, Sergio, Humberto Estay, Ahmet H. Avci, Lorenzo Pugliese, René Ruby-Figueroa, Andreina Garcia, Marco Aquino, Shahriyar Nasirov, Salvatore Straface i Efrem Curcio. "Membrane technology for a sustainable copper mining industry: The Chilean paradigm". Cleaner Engineering and Technology 2 (czerwiec 2021): 100091. http://dx.doi.org/10.1016/j.clet.2021.100091.

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Brantes, Rosana. "Forecast for electricity consumption in the copper mining industry, 2018-2029". JOURNAL OF MINING ENGINEERING AND RESEARCH 1, nr 1 (2019): 35–44. http://dx.doi.org/10.35624/jminer2019.01.04.

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Montes, Camila. "Forecast for water consumption in the copper mining industry, 2018-2029". JOURNAL OF MINING ENGINEERING AND RESEARCH 1, nr 1 (2019): 45–54. http://dx.doi.org/10.35624/jminer2019.01.05.

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Daci, A., G. Kaza, T. Deda i S. Hoti. "The environmental impact of the Copper industry in the Fani River Valley (Repsi "Hot spot") Mirdita, Albania". Bulletin of the Geological Society of Greece 40, nr 3 (5.06.2018): 1387. http://dx.doi.org/10.12681/bgsg.16970.

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For more than 40 years, full cycle Copper industry has exercised its activity in central Mirdita, as one of the priorities for the economic development of this zone. Copper deposits have been discovered in many parts of the territory of central Mirdita, whereas the main activity of the mining and processing industry is located in the Fan iriver valley. The interruption of industrial activity after the years '90, could not stop the negative environmental impact. The presence of dumps in Fani river banks (as in Repsi, Rresheni and Rubiku) and numerous mining works· (addits) in Spaçi and Kodër Spaçi slopes, from which many acid waters drain, including also the natural leaching of surface outcrops of mineralized zones, make up a serious danger to the biodiversity of this area. Several recommendations to reduce the environmental impact of the tailings and copper ores in the dumps in Fani river valley are given in this paper

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Трофимчук, А., A. Trofimchuk, О. Гуляева, O. Gulyaeva, Л. Каримова, L. Karimova, Д. Тухватуллина i D. Tuchvatullina. "The condition of hard dental tissues in workers of the mining industry". Actual problems in dentistry 12, nr 1 (25.03.2016): 56–61. http://dx.doi.org/10.18481/2077-7566-2016-12-1-56-61.

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To study the state of hard tissue of teeth in workers of mining and processing enterprises, engaged in mining and processing of copper-zinc ores, conducted a comprehensive dental examination 623 workers and a control group of 255 people, аnalysis of the dependence of the state of hard tissue of teeth on the length and degree of exposure to occupational factors in workers of mining and processing enterprises showed a high prevalence of dental hard tissue disease due to occupational exposures, which has a direct correlation relationship of time and degree of exposure to harmful factors. The results can be used for the organization of dental health care system operating under study and other similar companies.

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Del Rio, J. Ignacio, Paulina Fernandez, Emilio Castillo i Luis Felipe Orellana. "Assesing Climate Change Risk in the Mining Industry: A Case Study in the Copper Industry in the Antofagasta Region, Chile". Commodities 2, nr 3 (18.07.2023): 246–60. http://dx.doi.org/10.3390/commodities2030015.

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The challenges climate change poses require careful consideration and addressing within specific industries. In the mining context, climate change introduces potential limitations to the sustainable sourcing of minerals, thereby amplifying the criticality of several metals. However, most studies examining mineral criticality fail to assess the localized impacts of climate change, despite significant variations occurring at a relatively small scale. In this study, we propose a methodological approach for conducting a climate risk assessment in the mining industry, encompassing the identification of relevant hazards, vulnerabilities, and exposure specific to the sector. To illustrate the application of this approach, we utilize micro-level data for the Antofagasta region in Chile, a prominent mining cluster situated in a country projected to be profoundly affected by climate change. The findings of this study underscore the necessity for coordinated efforts in adaptation and climate resilience while offering a valuable tool for allocating resources to more vulnerable locations, thus strengthening the mineral supply chain.

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Figiela, Beata, i Kinga Korniejenko. "The possibility of using waste materials as raw materials for the production of geopolymers". Acta Innovations, nr 36 (30.09.2020): 48–56. http://dx.doi.org/10.32933/actainnovations.36.4.

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This article shows the possibility of using industrial and mining waste for creating new eco-friendly materials – geopolymers. The main objective of the article is to analyze the possibilities of using new composite received from waste materials from mining industry in practical applications, especially in construction industry. The article presents benefits and potential threats for using wastes for production of geopolymers from gangue, waste from iron processing, waste from copper mining and processing, waste from chromium processing and so-called red mud from aluminum production. Research methods applied in the article are: critical analysis of literature sources, including comparison new material with other materials used in similar applications.

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Karabyn, V., i I. Kochmar. "COPPER SPECIATION IN TECHNOGENESIS AREA OF COAL MINING INDUSTRY (case of Vizeyska mine Chervonohrad mining area)". Collected scientific papers Institute of environmental geochemistry 27 (2017): 30–49. http://dx.doi.org/10.15407/znp2017.27.030.

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Ivasenko, I. B., R. A. Vorobel, V. M. Uchanin, O. R. Berehulyak i T. S. Mandziy. "Detection of chalcopyrite in digital images of copper ore sample sections". Information extraction and processing 2023, nr 51 (14.12.2023): 52–61. http://dx.doi.org/10.15407/vidbir2023.51.052.

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Copper ores are mineral formations of natural origin, the concentration of copper or copper compounds in which is sufficient for their commercial mining. Because of this, copper ores are on the list of minerals that are of strategic importance for the sustainable development of the economy and defense capability of Ukraine. In addition, due to the high thermal conductivity, copper and its alloys are widely used for the manufacture of various types of heat exchangers and radiators. The content of copper in ores usually ranges from 1 to 5%; ores containing less than 0.5% copper are unprofitable for processing at the current level of technology. Mining of copper is of strategic importance, as copper is the main material for the production of cable products and other conductive parts in the electrical industry. The efficiency of technological processes in the mining and industry during the production of copper depends on the quality of ores in relation to the content of minerals that contain copper. Copper ore can be considered a heterogeneous material consisting of two homogeneous phases, one phase is host rock, and the other is copper mineral. Modern image processing techniques have allowed as to automate the identification of minerals in ore samples. Automatic recognition and quantification of minerals using X-Ray tomography, scanning electronic microscope, light microscopy, is one of the most important problems in ore processing systems, as the amount of the minerals in the ore must be determined for further processing. A method of segmentation of colour images of sections of test samples of copper ore is proposed to estimate the percentage content of its components in the section of the tested samples. It is based on the use of chalcopyrite colour features in the HSV model. This colour-based segmentation method is proposed to exploit the average value and distribution of HSV colour components of chalcopyrite in an copper ore image. Segmentation parameters are configured. The experimental results of the segmentation of colour images of copper ore slices by the proposed method are analyzed. The effectiveness of the method is checked using synthesized test images. The method provides an absolute error less than 2.5%.

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Cruz, Constanza, Sebastián Herrera-León, Daniel Calisaya-Azpilcueta, Ruth Salazar, Luis A. Cisternas i Andrzej Kraslawski. "Using Waste Brine from Desalination Plant as a Source of Industrial Water in Copper Mining Industry". Minerals 12, nr 9 (14.09.2022): 1162. http://dx.doi.org/10.3390/min12091162.

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One of the main challenges of seawater desalination is a large volume of waste brine production that is commonly discharged into the sea and may threaten the marine ecosystem. This is critical in regions where conventional water resources are scarce and desalinated seawater is an alternative to meet water demand. Especially in regions where the mining industry is a key player in the economic development. The novelty of this research consists in the determination of the potential use of waste brine, discharged from the reverse osmosis process, as a source of industrial water in copper mining industry. To enable the waste brine applicability, there should be reduced calcium and magnesium ions concentration for improving copper recovery in the froth flotation process. The flotation tests were conducted in a batch cell with synthetic minerals composed of chalcopyrite, kaolinite, and quartz using different water qualities. The results showed that treated waste brine significantly improved copper recovery compared to untreated waste brine and seawater. Similar copper recovery was achieved when flotation test was performed with tap water and treated waste brine. Therefore, treated waste brine could provide a suitable water quality required in the froth flotation process as an alternative non-conventional water resource.

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Смаков, Н. Б. "Mining industry of the Republic of Kazakhstan: Pavlodar region". Горный журнал Казахстана, nr 4(192) (25.05.2021): 9–15. http://dx.doi.org/10.48498/minmag.2021.192.4.002.

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Горнодобывающая промышленность является основой для развивающейся отечественной экономики. Однако для успешного функционирования всего хозяйства необходима развитая обрабатывающая промышленность. Все эти компоненты должны функционировать совместно и составлять единый экономический организм. Казахстан – территориально крупная страна, которая отличается многообразием полезных ископаемых, где каждый регион специализируется на определенных отраслях промышленности. В статье выполнен обзор горнодобывающей промышленности Павлодарской области. Исследованы и изучены положительные и отрицательные стороны функционирования крупных горнодобывающих предприятий и их влияния на окружающую среду. Для наглядности приведены таблицы и рисунки, что позволит более объективно оценить сложившуюся картину. The mining industry is the backbone of a growing domestic economy. However, for the successful functioning of the entire economy, a developed manufacturing industry is needed. All these components must function together and form a single economic organism. Kazakhstan is a geographically large country with a variety of minerals, where each region specializes in certain industries. The article provides an overview of the mining industry of the Pavlodar region. The positive and negative aspects of the functioning of large mining enterprises and their impact on the environment have been investigated and studied. For clarity, tables and figures are given, which will allow a more objective assessment of the current picture. Key words: mining industry, minerals of Kazakhstan, Pavlodar region, fuel and energy complex, mining and metallurgical complex, geology and mineralogy, coal, copper ore, industrial ecology, environmental protection.

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Savelieva, A. S. "The Search Possibilities of the Ancient Ore Mining Sites in the North of the Kuznetsky Alatau". Bulletin of Kemerovo State University 21, nr 3 (5.10.2019): 644–53. http://dx.doi.org/10.21603/2078-8975-2019-21-3-644-653.

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The foothills of the North-Western Kuznetsky Alatau are considered as the copper-ore base of the Tagar archaeological culture. The paper introduced some published data on copper deposits on the banks of the river Kia and the bordering area of the Kuznetsky Alatau. Map-marking revealed the geographical the connection between the Koghuh tectonic area, the Central-Martaiga structure-formaton area, and the Tagar archaeological sites. The research registered the known settlements on the Kemerovo region territory with signs of the bronze industry (copper-bronze artifacts, tools for ore crushing, slag) related to Tagar and transitional Tagar-Tashtik Epoch. The peculiarities of such sites demonstrated the localization of the bronze industry process in the some fortified and stable settlements. The comparison of geochemical admixtures revealed the differences of copper-ore origin at the developed stage of Tagar culture and the transitional Tagar-Tashtik stage. This can be explained by the difference in geography of the sites as related to the copper deposits of North-Western, Northern, and North-Eastern Kuznetsky Alatau foothills. The authors believe that the banks of the Kia and its left tributaries, the Koghuh and the Kundat, can reveal some ancient copper mining archaeological sites in the future.

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Zaitsev, Vladimir M., i Liliya O. Zhigalskaya. "Post-industrial shifts in the world’s mining industry". Journal of the Belarusian State University. Geography and Geology, nr 1 (26.05.2022): 71–86. http://dx.doi.org/10.33581/2521-6740-2022-1-71-86.

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The changes in the sectoral and spatial structure of the world’s mining industry that occurred the period during 1980–2019 in the conditions of post-industrial development of the world economy are considered. The relevance of the study is dictated by the global process of dematerialisation of the economy under the influence of scientific and technological progress and the transition of world production to the principles of sustainable development, which causes not only a change in the role of the mining industry in the structure of the economy, but also entails a qualitative transformation of its spatial structure. On the base of calculations of indices characterising the intensity of dynamics, structural shifts and the spatial concentration of the volumes of mineral raw materials extraction with the subsequent interpretation of their values, the key trends in the development of the mining industry and the features characteristic of its constituent sectors, including the extraction of coal, oil, natural gas, iron ore, bauxite, copper, potash and phosphate rock were identified. The result of the conducted research is the revealed features of the mining industry development in the post-industrial period, which consist of positive dynamics of its functioning, stabilisation of the sectoral structure and strengthening of the positions of developing countries and individual regions in the extraction of mineral resources. The obtained results allow us to assess the features of processes taking place in the primary sector of the world economy at the present stage of development and the role of individual countries and regions in the mining industry of the world.

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Bergquist, Ann-Kristin, i Magnus Lindmark. "Sustainability and Shared Value in the Interwar Swedish Copper Industry". Business History Review 90, nr 2 (2016): 197–225. http://dx.doi.org/10.1017/s0007680516000374.

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This study of the Swedish-based mining company Boliden examines the proactive strategies it adopted to deal with the potential for severe environmental problems associated with the establishment of its large copper smelter in the 1920s. The article demonstrates how international networks, personal experience, and knowledge transfer from the U.S. copper industry help to explain the importance given to environmental issues by the Swedish industrialists. It is suggested that the main explanation for the proactive stance of the Swedish managers is that they perceived excessive pollution as working against creating a profitable and sustainable business. This case provides compelling evidence that firms pursuing an agenda focused on earning profits can still deliver environmental innovation and value to the local community, compatible with the concept of creating shared value.

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Winarko, Agus, i Zulkifli Djunaidi. "ANALYSIS OF ACCIDENT DATA AT PT X FOR THE 2018-2022 PERIOD USING THE HFACS-MINING INDUSTRY FRAMEWORK METHOD". Jurnal Ilmiah Manajemen, Ekonomi, & Akuntansi (MEA) 8, nr 2 (10.05.2024): 130–45. http://dx.doi.org/10.31955/mea.v8i2.3990.

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The mining industry is a high-risk industrial activity. Human factors have been identified as the most common cause of major accidents in the mining industry. The Incident Management System of PT X, which is a company in exploration, mining, processing, and marketing sector of copper, gold and silver concentrate, part of the state-owned mining holding enterprise Mining Industry Indonesia, documented 322 cases of accidents within the 2018-2022 period. This research aims to analyze accident data at PT X using the Human Factor Analysis and Classification System-Mining Industry (HFACS-MI) framework. Methods. This research collected qualitative data for 322 accident cases at PT X in 2018-2022 from the incident management system database categorized as recordable injuries. Factors causing the accident were coded using the HFACS-MI framework. Accident data analysis used descriptive statistics. Results. The study findings revealed that 84% of all accidents involved contractor workers and 16% involved permanent workers at PT X. The results of the analysis using the HFACS-MI framework showed that each layer or level contributes to accidents, namely external factors by 44%, organizational influence by 68%, unsafe leadership by 90%, preconditions for unsafe acts by 99%, and unsafe acts by 99.7%. Conclusion. These findings emphasize the need to reduce the number of human errors during mining operations to reduce the current accident trend. The HFACS-MI framework has proven to be a valuable tool for robust accident analysis of human factors in mining.

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Zepeda, Víctor J., Ivan Nancucheo, Milton Guillen, Enrique Becerra, Camila Escuti, Dina Cautivo, Daniella González, C. Colipai, Cecilia Demergasso i Pedro A. Galleguillos. "Biological Production of Copper Sulfide Concentrate from Flotation Tailings and Low Grade Ore". Solid State Phenomena 262 (sierpień 2017): 202–6. http://dx.doi.org/10.4028/www.scientific.net/ssp.262.202.

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Flotation tailings are hazardous due to physical and chemical instability and are currently considered one of the main pollution concerns of mining industry. Most of these tailings are fine-grained residues with low copper content (0.1-0.8%) and include toxic compounds, such as heavy metals, arsenic, and flotation reagents, among others. Another hazard is the generation of acid mine drainage (AMD) due to biological oxidation of tailings. On the other hand, low-grade ore is challenging the mining industry to commercially produce copper.The main objective of this work was to assess the use of flotation tailings and low-grade ore to produce a biologically-produced copper sulfide, as a product for further pyrometallurgical or fine chemistry processing. Low-grade ore and flotation tailings were first agglomerated at different proportions and leaching tests were performed in 1m columns, using either industrial or synthetic raffinate solution. Then, the PLS solution obtained from the column tests was subjected to selective precipitation of copper by using biogenic hydrogen sulfide (H2S) generated by a mixed culture of neutrophilic sulfate reducing bacteria (SRB), enriched from sediments of Caracarani river (located at 4,600 m over sea level in northern Chile).Over 91% of the copper soluble present in the PLS was recovered as copper sulfide in 28 days, while ferrous iron, other metals and arsenic remained in solution. Analysis performed by XRD confirmed the presence of copper in the precipitate (58% as covellite). This work demonstrates the possibility to apply bioleaching and bio-precipitation technologies to treat tailings and low-grade copper ore to produce a high quality copper sulfide.

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GUERRERO RUIZ, JUAN CARLOS, i JOSE MARIA MARTIN CIVANTOS. "JEREZ-LANTEIRA MINING COMPANY, GRANADA. ORIGIN AND HISTORY OF THE HYDRAULIC PLANT FOR THE EXPLOITATION OF COPPER ORE IN THE 19TH CENTURY". DYNA 96, nr 5 (1.09.2021): 473–77. http://dx.doi.org/10.6036/9942.

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In this article we will get to know an old hydraulic plant of a mining industry, very unique, which transformed hydraulic energy into pneumatics to supply compressed air to a copper mine and its smelter. It was located in the Granada region of the Marquesado del Zenete, and built in 1889 by the colonial European mining industry. To do this, we delve into its historical origin, and analyze this original technological project that allowed a new energy transformation system. Directed and executed by a series of engineers, metallurgists, businessmen and peasants, who through their work and will were participants in the industrialization process in Spain with the development of machinery and socialized work that will change a way of life. These remains today make up an industrial heritage at risk of disappearing. Living memory of what our mining industry was with the development of engineering and its social, identity and cultural values. KEYWORDS: Water, Air, Industrial Colony, Compression, Foundry

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Liu, Chunhui, Xingyu Liu, Man Hou, Sensen Wu, Luoqi Wang, Jie Feng i Chunxia Qiu. "Machine Learning and EPCA Methods for Extracting Lithology–Alteration Multi-Source Geological Elements: A Case Study in the Mining Evaluation of Porphyry Copper Ores in the Gondwana Metallogenic Belt". Minerals 13, nr 7 (25.06.2023): 858. http://dx.doi.org/10.3390/min13070858.

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The location and development of porphyry copper deposits is a key issue for the mining industry. In this study, the Gondwana metallogenic belt was chosen as the study area to compare multiple methods for extracting multi-source geological elements to maximize the accuracy of the datasets used for mining evaluation and to use them to assess porphyry copper mineability. By comparison, a support vector machine (SVM) with an overall classification accuracy of 97.6573% and a Kappa coefficient of 0.9806 was used to extract the lithological distribution of the study area. Spectral feature-enhanced principal component analysis (EPCA) was combined with ASTER images to extract alteration information, with significant improvements in spatial aggregation and overall area compared to other alteration extraction methods, while a hierarchical alteration interpolation method was proposed to overcome the limitations of relying solely on remote sensing images to obtain surface alteration information and qualitatively extend deep alteration information. In addition, by overlaying various geoscientific factors affecting copper mineralization and mining, a Pearson correlation analysis is carried out in conjunction with currently proven or mined copper occurrences, and a weight of evidence approach is used to classify the study area into four mineability classes, which is important for narrowing down potential target areas for mineral exploration and assessing their mining value while contributing to an in-depth understanding of the role of geological elements in mineralization and development.

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Ketelaer, Andreas, i Andreas Hauptmann. "In the Shadow of Timna? The Mining Region of Wadi Amram New Analytical and Archaeological Aspects". METALLA 22, nr 2 (17.04.2017): 169–83. http://dx.doi.org/10.46586/metalla.v22.2016.i2.169-183.

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The copper mines of Wadi Amram are located only 10 km north of the prehistoric settlements Tall Hujayrat al-Ghuzlan and Tall al- Magass where there is some evidence of copper metallurgy in the Late Chalcolithic / Early Bronze Age I. These two settlements lay near the Gulf of Aqaba and may have been important nodes for the distribution of copper during this period. Earlier lead isotopic studies demonstrated that copper ores from the mines of Timna and Faynan are possible sources for the early copper production, but up until now the much closer copper deposit of Wadi Amram has been ignored. New lead isotope data has shown that the Wadi Amram copper ore can be distinguished from the ore from Timna and closely correlates to the Faynan copper ores. Some of the copper-related objects from Tall Hujayrat al-Ghuzlan and Tall al-Magass have lead isotope ratios more comparable to ore from Wadi Amram than from Timna and warrants a reassessment of the organization mode of the prehistoric mining industry in the southern Levant.

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Ruppert, Ndinawe Mtonga, Kevin Sobel-Read i Blake Pepper. "Law, Global Value Chains and Upgrading in the Mining Industry: A Case Study on Zambia". African Journal of International and Comparative Law 29, nr 4 (listopad 2021): 521–50. http://dx.doi.org/10.3366/ajicl.2021.0382.

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The increasingly interconnected nature of global commerce has caused dramatic structural transformation. Global value chains (GVCs) are crucial to understanding the resulting consequences, including the possibilities available today for a country's economic success. Law plays a central role. In this article, we explore GVC upgrading in Africa, focusing on the mining sector in Zambia. We outline three impediments to Zambia's upgrading capacity within the copper-mining GVC and conclude with three policy suggestions that could improve Zambia's position. By shedding light on the relationship between law, development and global value chains, the article provides beneficial insight to Zambia and across Africa.

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Bergstrom, Ryan D., i Afton Clarke-Sather. "Balancing Socio-Ecological Risks, Politics, and Identity: Sustainability in Minnesota’s Copper-Nickel-Precious Metal Mining Debate". Sustainability 12, nr 24 (9.12.2020): 10286. http://dx.doi.org/10.3390/su122410286.

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In the northeastern corner of Minnesota, two of the state’s most iconic symbols, mining and pristine wilderness, are on a collision course. The Duluth Complex, considered by many to be the world’s largest undeveloped deposit of copper-nickel and precious metals, is the site of mining proposals for several controversial mines. Proponents suggest that mining can be accomplished in an environmentally benign manner, and in the process create nearly 1000 jobs and $500 million in economic benefits annually. Opponents counter that the tourism and recreation industries already provide nearly 18,000 jobs and bring over $900 million in economic benefits annually, and that mining will permanently impair the regions environment. Thus, the copper-nickel and precious metal mining debate has become highly polarized, and serves as an ideal example of how people address national and global sustainability issues at local and regional scales. This study examines this polarization through a Q-sort analysis of subjectivities of residents of the state of Minnesota. Results suggest that partisanship is a strong predictor of attitudes towards mining, and that the strongest differences between respondents were not based on perceptions comparing jobs and the environment, the typical partisan divide, but rather on respondents’ perceived identity with relation to the mining industry or water resources.

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Neaman, A., i C. Yáñez. "Assessment of the Ecological Status of Soils Contaminated by the Copper Mining Industry in Chile: Earthworms to the Rescue". Почвоведение, nr 1 (1.01.2023): 81–88. http://dx.doi.org/10.31857/s0032180x22600627.

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Soil fauna can serve as an excellent tool for ecological assessment of soil quality. The earthworm Eisenia fetida L. is widely used as a bioindicator organism to assess the toxicity of metals, metalloids, and other pollutants. Many studies have shown that the concentrations of metals and metalloids toxic to earthworms are an order of magnitude lower in artificially contaminated soils than in industrially contaminated soils. The novelty of this study is that toxicity estimates were made using native industrially contaminated soils. The results of the two experiments demonstrate the potential use of earthworms for ecological assessment of soils contaminated with metals and metalloids due to copper mining activities in central Chile. The main contaminant in these soils was copper, but arsenic, commonly found in copper ore, was also present in the contaminated soils. In the short-term bioassay, E. fetida earthworms avoided the soil in response to increasing copper content. However, in long-term experiments, arsenic proved to be more toxic to earthworm reproduction, while copper had little effect. In this study, we present toxicity thresholds for copper and arsenic to E. fetida in industrially contaminated native soils.

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Warchulski, Rafał, i Krzysztof Szopa. "Cu-Zn slags from Røros (Norway): a case study of rapid cooling and crystal nucleation". Contemporary Trends in Geoscience 3, nr 1 (1.09.2014): 69–76. http://dx.doi.org/10.2478/ctg-2014-0024.

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Abstract The mining town of Røros located in central Norway was established in 1644 and it is known of historical mining industry related to copper. Røros was designated as an UNESCO World Heritage Site in 1980 on the base of mining culture represented by, e.g., unique wooden architecture. Slag pieces are composed of three parts differing in glass to crystallites ratio. Røros slags are composed of olivine- and pyroxene- group minerals accompanied by sulphides, with glass in the interstices. Temperature gradient and volatiles content were determined as the main factor influencing crystallization process in this material

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Imasiku, K., i E. Ntagwirumugara. "Sustainable energy supply and business collaborations for sustainability, resilience and competitiveness in the Zambian copper industry after Covid-19". Journal of Energy in Southern Africa 32, nr 1 (22.02.2021): 97–108. http://dx.doi.org/10.17159/2413-3051/2021/v32i1a8083.

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The mining industry in Zambia is energy-intensive, with hydro energy providing the required energy. But other sources of energy may need to be added, because hydro energy is subject to good rain patterns, threatened by the spectre of climate change, as already indicated by the current prolonged hours of load shedding by state-owned , Zambia Electricity Supply Company. This research looks at state-of-art mining technologies and collaborative business processes that leverage on the expected ramp in copper and cobalt (Cu-Co) global demand post-Covid-19, to help design resilient business systems by manufacturing, source goods and services within the Southern African Development Community (SADC) region to lower Cu-Co production costs, and maximise profits through shared resources and bilateral trade agreements. With evidence, projection and predictions by global leaders in the Cu-Co industry, this study evaluates the preparedness and resilience of the Zambian mining industry for sustainable energy supply, environmental sustainability, and suggests some possible business collaborations within the SADC region to share the following resources: metal refineries, transportation of goods and services, expertise and energy supplies within SADC, to enhance business sustainability. The study shows that the resilience of Cu-Co business in resource-rich nations like Zambia is complex and is heavily influenced by investment decisions, stakeholder interests, copper ore grades and extractive process types, reliable power supply, and socio-economic and political issues. The significance of this study is that it proposes some business collaborations within SADC that can increase energy reliability and supply, Cu-Co production, increase business resilience, improve global competitiveness and sustainability by exploring energy efficiency and generation-mix strategy. Highlights A sustainable energy analysis for Zambia. Establishing the role of mine multi-national enterprises concerning environmental sustainability. Proposing copper business resilience collaborations within SADC. Developing a mining business resilience and sustainability model for sustainable power supply, high production, profitability and global competitiveness.

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Phimister, Ian. "Corporate Profit and Race in Central African Copper Mining, 1946–1958". Business History Review 85, nr 4 (2011): 749–74. http://dx.doi.org/10.1017/s0007680511001188.

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The focus in the literature on the political outcomes of decolonization has resulted in neglect of the business activities that took place from the mid-1940s to the mid-1950s. Missing from existing accounts are the occasions when business turned impending political change to economic advantage. One such shift occurred in the central African copper-mining industry as, first, the promise of racial “partnership” during the short-lived Federation of Rhodesia and Nyasaland and then the prospect of African majority rule in Northern Rhodesia redefined the political context within which businesses operated. Rather than emphasizing the ethical considerations that influenced business attitudes, this study describes how corporate policies toward the job color bar were shaped by the copper industry's changing cost structure and profitability.

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Kondratiev, V. B. "Commodity goods forecast". Mining Industry Journal (Gornay Promishlennost), nr 5/2021 (12.11.2021): 57–64. http://dx.doi.org/10.30686/1609-9192-2021-5-57-64.

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The last twenty years have been a favorable period for the global economy. Asian economies grew rapidly, which boosted the demand for key commodities such as gold, copper and iron ore, and increased mining employment worldwide. This growth has been largely driven by the process of globalization and the rising welfare of population in the emerging markets such as China and India. The world is now entering a more dangerous phase of its development, as political and economic tensions between China and the United States are increasing and threaten to nullify the results of the economic progress. A rollback to protectionism and de-globalization may occur. Asia has been the engine of the mining industry, and commodity prices have helped to determine the prospects of the mining cycle. A number of commodities, including copper, have rebounded from their lows in recent months. This suggests that a new phase of economic recovery is starting to gain momentum, opening a new phase in the expansion of the global mining sector.

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Burt, Roger, i Martin Timbrell. "Diversification as a Response to Decline in the Mining Industry: Arsenic and South-Western Metal Production 1850–1914". Journal of Interdisciplinary Economics 2, nr 1 (kwiecień 1987): 31–54. http://dx.doi.org/10.1177/02601079x8700200104.

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Joint supply functions are not uncommon but nowhere are they more prevalent than in the mining industry. Assessment of the importance of marketable by-products is made more difficult by the lack of detailed information on costs. This study shows how data on output and prices may be used to provide evidence of the qualitative and quantitative importance of arsenic—the most important by-product of S.W. mines—to the development and performance of the S.W. mining industry. Detailed annual returns on tin and copper mines are used to chart the development of individual mines. The circumstantial evidence for the importance of arsenic is strong but the use of highly disaggregated data reveals that arsenic production was irrelevant to the vast majority of tin and copper producers although for a few it may have aided continuity of production for a very short period. The apparent misconceptions are shown to have arisen from the development of one major arsenic producer. Statistical evidence is produced in the form of estimated supply functions. The functions are well defined and reveal that neither the price of nor production levels of arsenic had any significant impact on tin and copper production—a result in marked contrast to the casual empiricism of industrial historians.

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Aurélien, Ningabo, Jianhua Hu, Sanoh Ousmane, Brian Makuza i Regean Pitiya. "Impact of the Mining Rights Allocation Process on the Sustainable Development of the Copper Mining Industry in Zambia". Journal of Geoscience and Environment Protection 10, nr 04 (2022): 227–46. http://dx.doi.org/10.4236/gep.2022.104014.

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